Consider these reactions, where M represents a generic metal. 2M(s) + 6HCl(aq) rightarrow 2MCl_3(aq) + 3H_2(g) Delta H_1 = -779.0 kJ/mol HCl(g) rightarrow HCl(aq) Delta H_2 = -74.8 kJ/mol H_2(g) + Cl_2(g) rightarrow 2HCI(g) Delta H_3 = -1845.0 kJ/mol MCl_3(s) rightarrow MCl_3(aq) Delta H_4 = -150.0 kJ/mol Use the information above to determine the enthalpy of formation for the compound MCl_3 in this reaction. 2M(s) + 3Cl_2(g) rightarrow 2MCl_3(s)